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Finding the Fourth Proportional to 30,218.01, 41,700.90 and 16,788.90

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Solution

The fourth proportional to 30,218.01, 41,700.90 and 16,788.90 is: 23,168.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.01 : 41,700.90 = 16,788.90 : x
  2. Step 2: Convert to fraction form
    30,218.01/41,700.90 = 16,788.90/x
  3. Step 3: Cross multiply
    30,218.01x = 41,700.90 × 16,788.90
  4. Step 4: Simplify right side
    30,218.01x = 700,112,240.01
  5. Step 5: Solve for x
    x = 700,112,240.01/30,218.01
  6. Step 6: Final answer
    x = 23,168.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.